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diff --git a/chromium/third_party/blink/renderer/platform/exported/web_scrollbar_theme_geometry_native.h b/chromium/third_party/blink/renderer/platform/exported/web_scrollbar_theme_geometry_native.h
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+++ b/chromium/third_party/blink/renderer/platform/exported/web_scrollbar_theme_geometry_native.h
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+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_EXPORTED_WEB_SCROLLBAR_THEME_GEOMETRY_NATIVE_H_
+#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_EXPORTED_WEB_SCROLLBAR_THEME_GEOMETRY_NATIVE_H_
+
+#include <memory>
+#include "third_party/blink/public/platform/web_rect.h"
+#include "third_party/blink/public/platform/web_scrollbar_theme_geometry.h"
+#include "third_party/blink/renderer/platform/platform_export.h"
+#include "third_party/blink/renderer/platform/wtf/allocator.h"
+#include "third_party/blink/renderer/platform/wtf/noncopyable.h"
+
+namespace blink {
+
+class ScrollbarTheme;
+class WebScrollbar;
+
+class PLATFORM_EXPORT WebScrollbarThemeGeometryNative
+    : public WebScrollbarThemeGeometry {
+  USING_FAST_MALLOC(WebScrollbarThemeGeometryNative);
+  WTF_MAKE_NONCOPYABLE(WebScrollbarThemeGeometryNative);
+
+ public:
+  static std::unique_ptr<WebScrollbarThemeGeometryNative> Create(
+      ScrollbarTheme&);
+
+  bool HasButtons(WebScrollbar*) override;
+  bool HasThumb(WebScrollbar*) override;
+  WebRect TrackRect(WebScrollbar*) override;
+  WebRect ThumbRect(WebScrollbar*) override;
+  WebRect BackButtonStartRect(WebScrollbar*) override;
+  WebRect BackButtonEndRect(WebScrollbar*) override;
+  WebRect ForwardButtonStartRect(WebScrollbar*) override;
+  WebRect ForwardButtonEndRect(WebScrollbar*) override;
+  WebSize NinePatchThumbCanvasSize(WebScrollbar*) override;
+  WebRect NinePatchThumbAperture(WebScrollbar*) override;
+
+ private:
+  explicit WebScrollbarThemeGeometryNative(ScrollbarTheme&);
+
+  // The theme is not owned by this class. It is assumed that the theme is a
+  // static pointer and its lifetime is essentially infinite. Only thread-safe
+  // functions on the theme can be called by this theme.
+  ScrollbarTheme& theme_;
+};
+
+}  // namespace blink
+
+#endif